Riding around in the California neighborhood of Calabasas, Corden sported a Santa Claus sweater, while Carey donned a red leather jacket with a diamond-encrusted bra underneath. The piece is set to air in December.

"A Christmas Melody” is airing now! Can’t wait for you all to see my directorial debut! 😘 #tunein #achristmasmelody @hallmarkchannel

My little elves 🎄🎁✨ #comeon #rocnroe

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Carey would appear to be the perfect guest for a Christmas edition of "Carpool Karaoke," as her 1994 album, Merry Christmas, is the best-selling Christmas album of all time and her first "Carpool Karaoke" appearance has nearly 28 million views on YouTube.